I received this as a gift from a good friend of mine for my second son. I knew about the WubbaNub but didn’t really want to spend the money on a pacifier that I wasn’t sure I was going to use. I gave it to my second son curious about his reaction. Although it is recommended to give up to six months (no teeth), my son cannot go to sleep with out it at seven months and two teeth! The minute I lay him down in his crib to sleep he will wimper until I give it to him and he curls up in ecstasy.